Troubleshooting - Denon PMA-2020AE Owner's Manual

Troubleshooting

If a problem occurs, first check the following:
1. Are the connections correct?
2. Is the unit being operated as described in the owner's manual?
3. Are the other components operating properly?
If this unit does not operate properly, check the items listed in the table below. If the problem persist there
may be a malfunction.
In that case, disconnect the power immediately and contact your retail outlet.
Symptom Cause
When the power is • The power cord's plug is not
turned on, the power fully plugged in.
indicator does not
light and no sound is
produced.
Power switches • The protection circuit will be
off suddenly while activated depending upon the
you are using the temperature rise in the internal
unit, the power parts of the unit.
indicator will flash
in red at intervals
of approximately 1
seconds.
Power switches • A speaker with impedance not
off suddenly while supported by this unit is used.
you are using the • The protection circuit has been
unit, the power activated because the core
indicator will flash wires of different
red at intervals of cables have touched each other
approximately 0.5 or a core wire was slipped out
seconds. of the terminal and is touching
the unit's rear panel.
Even applying • The amplifier circuit has failed. • Switch off the power and
power, the power
display flashes
red at intervals of
approximately 0.5
seconds.
Countermeasure
• Check if the cord is securely
inserted into the wall power
outlet.
• Please switch off power at
once, and re-apply the power
after the body temperature has
fallen sufficiently.
• Please re-install the unit in a
place having good ventilation.
• Please use speakers which
have the specified impedance.
• Unplug the power cord,
then after twisting the core
speaker wires together tightly again,
or effecting termination
treatments etc, please
reconnect once again.
please contact the DENON
service adviser.
Symptom
The power indicator • The speaker cables are not fully
lights but no sound is connected.
produced. • The device you want to listen
to has not been selected.
• The volume control is set to
minimum.
• The input cable is not fully
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connected.
7
Sound is only • The speaker cables are not fully
produced from the left connected.
or right speaker (s). • The input cable is not fully
connected.
• The left/right balance is off.
5
The left and right • The
of stereo sound is speakers or input cables are
reversed. reversed.
5
Humming sound • The player's ground wire is not
is heard in the connected.
music when playing • The
records. connected
5
terminals.
• Influence from a TV or VCR
4
near the player.
Howling is produced • The player and speakers are
along with the music too close together.
if the volume is too
high when playing • The
records. speakers are being transmitted
to the player through the floor.
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When playing a • The
record, the sound is incorrect.
distorted. • There is dirt on the tip of the
needle.
• The cartridge is defective.
16
Cause Countermeasure
• Connect securely.
• Insure the correct input is
selected.
• Set to an appropriate level.
• Connect securely.
• Connect securely.
• Connect securely.
• Adjust to a proper balance with
the balance control knob.
connections of the • Check the connections to be
sure that left is connected to
left, right to right.
• Connect securely.
cables are not fully • Connect securely.
to the PHONO
• Try changing the positions in
which the devices are installed.
• Install the player and speakers
as far from each other as
possible.
vibrations from the • Use cushions, etc., to absorb
the speakers' vibrations.
needle pressure is • Adjust to a proper needle
pressure.
• Check the tip of the needle.
• Replace the cartridge.
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